Annotations: 8QV5

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Myosin_head	e8qv5B01	A: alpha bundles	X: Helical bundle insertion in helicase domains	H: Helical bundle in Hef helicase	T: Helical bundle in Hef helicase	F: Myosin_head	ECOD (develop294)
A	Myosin_head	e8qv5A01	A: alpha bundles	X: Helical bundle insertion in helicase domains	H: Helical bundle in Hef helicase	T: Helical bundle in Hef helicase	F: Myosin_head	ECOD (develop294)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B	Heavy Chain	IGHV1	-	sphingosine-1-phosphate transporter spns2	SAbDab (2026-03-20)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF07690	Major Facilitator Superfamily (MFS_1)	Major Facilitator Superfamily	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	Nanobody D12	-	-	-
A	Sphingosine-1-phosphate transporter SPNS2	lipid transporter activity sphingolipid transporter activity transporter activity transmembrane transporter activity	regulation of biological process regulation of cell motility regulation of cellular process regulation of leukocyte migration biological regulation lymphocyte migration regulation of lymphocyte migration leukocyte migration immune system process regulation of locomotion regulation of T cell migration mononuclear cell migration regulation of cell migration cell migration regulation of biological process regulation of cell motility regulation of cellular process regulation of leukocyte migration biological regulation lymphocyte migration regulation of lymphocyte migration leukocyte migration immune system process regulation of locomotion regulation of T cell migration mononuclear cell migration regulation of cell migration cell migration cellular process regulation of immune system process T cell migration cell motility regulation of mononuclear cell migration locomotion developmental process immune system development multicellular organism development multicellular organismal process lymph node development animal organ development anatomical structure development hematopoietic or lymphoid organ development system development pigmentation regulation of eye pigmentation eye pigmentation developmental pigmentation regulation of developmental pigmentation regulation of pigmentation system process sensory perception nervous system process sensory perception of sound sensory perception of mechanical stimulus localization transport macromolecule localization lipid localization lipid transport establishment of localization skeletal system development bone development multicellular organismal-level homeostasis leukocyte homeostasis T cell homeostasis homeostatic process homeostasis of number of cells lymphocyte homeostasis B cell homeostasis regulation of humoral immune response humoral immune response response to stimulus immune response regulation of response to stimulus regulation of immune response cellular response to stimulus signaling sphingolipid mediated signaling pathway cell communication sphingosine-1-phosphate receptor signaling pathway G protein-coupled receptor signaling pathway signal transduction sphingolipid biosynthetic process biosynthetic process lipid biosynthetic process primary metabolic process metabolic process sphingolipid metabolic process lipid metabolic process	cellular anatomical structure membrane endosome membrane membrane-bounded organelle intracellular anatomical structure endosome intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle membrane bounding membrane of organelle vesicle membrane cytoplasmic vesicle cellular anatomical structure membrane endosome membrane membrane-bounded organelle intracellular anatomical structure endosome intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle membrane bounding membrane of organelle vesicle membrane cytoplasmic vesicle organelle cytoplasm vesicle organelle membrane cell periphery plasma membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR011701	Major facilitator superfamily	Family
A	IPR044770	Protein spinster-like	Family
A	IPR036259	MFS transporter superfamily	Homologous Superfamily
A	IPR020846	Major facilitator superfamily domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: Q8IVW8	allergic rhinitis interstitial cystitis malignant ependymoma non-small cell lung carcinoma sinusitis atypical teratoid rhabdoid tumor lung adenocarcinoma malignant glioma nonsyndromic genetic deafness spina bifida cystic fibrosis lung carcinoma nasal cavity disease rheumatoid arthritis ulcerative colitis

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Major Facilitator Superfamily (MFS) Transporters	Sphingosine-1-phosphate (S1P) transporter Spns2 (Spinster homolog 2) in lauryl maltose neopentyl glycol (LMNG)

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.